Add the ability to pass a precondition in an autotest so that it is displayed in allure

**Is your feature request related to a problem? Please describe.**
I can't add precondition in my autotest (step my autotest and text message). Therefore, it is sometimes difficult for a tester to understand what belongs to the test and what to the precondition.

**Describe the solution you'd like**
Add the ability to add a precondition. So that this is displayed correctly in allure
await precondition('add precondition')

**Additional context**

Start by locating the existing autotest step API and the code that serializes test steps into Allure results. Trace how a proposed precondition call would be represented and compare the generated report with the expected separation between preconditions and test steps; add coverage for the new behavior in the relevant integration tests.

Written by the indexing model from the issue text.